Pyoderma Gangrenosum Quiz

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Saqib Baig

Saqib Baig, MD, MS (Respiratory medicine, Critical Care, Internal medicine)

Yukiko Ueda

Yukiko Ueda, MD (Dermatology)

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Learn more about Pyoderma Gangrenosum

Content updated on Sep 20, 2022

What is pyoderma gangrenosum?

It is a non-inflammatory, non-infectious condition of the skin where large and painful skin ulcers are developed. These start as small red bumps or blisters. The cause is unknown, but it is associated with immune system disorders like Rheumatoid arthritis, Crohn’s disease, and ulcerative colitis.

Symptoms of pyoderma gangrenosum

  • Bumps containing pus

  • Scars or marks from the rash/wound

  • Sores or ulcers of the skin

  • Skin redness or red bumpy rashes

  • Skin hardening

Questions your doctor may ask to check for pyoderma gangrenosum

Your doctor may ask these questions to diagnose pyoderma gangrenosum

  • Do you have bumps on your skin with pus?

  • Do you have scars or marks where the rashes/wound was previously?

  • Do you have skin ulcers (sores)?

  • Do you have red skin or red spots on the skin?

  • Do you have hardening of the skin?

Treatment for pyoderma gangrenosum

Treatment includes administering anti-inflammatory medication and good wound management to prevent infection. Skin grafting may be required for large wounds.

View the symptoms of Pyoderma Gangrenosum


  • Maverakis E, Marzano AV, Le ST, Callen JP, Brüggen MC, Guenova E, Dissemond J, Shinkai K, Langan SM. Pyoderma gangrenosum. Nat Rev Dis Primers. 2020 Oct 8;6(1):81. doi: 10.1038/s41572-020-0213-x. PMID: 33033263.

  • Braswell SF, Kostopoulos TC, Ortega-Loayza AG. Pathophysiology of pyoderma gangrenosum (PG): an updated review. J Am Acad Dermatol. 2015 Oct;73(4):691-8. doi: 10.1016/j.jaad.2015.06.021. Epub 2015 Aug 5. PMID: 26253362.

Reviewed By:

Saqib Baig

Saqib Baig, MD, MS (Respiratory medicine, Critical Care, Internal medicine)

Yukiko Ueda

Yukiko Ueda, MD (Dermatology)

From our team of 50+ doctors

Just 3 minutes.
Developed by doctors.

Ubie is supervised by 50+ medical experts worldwide

Shohei Harase

Shohei Harase, MD


Kameda Medical Center, Japan

Yu Shirai

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Yotsuya Yui Clinic, Japan

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Yoshinori Abe, MD

Internal medicine

Co-founder of Ubie, Inc.

Rohini R

Rohini R, MD

Ear, nose, throat (ENT)

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Seiji Kanazawa, MD, PHD

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National Center for Child Health and Development, Japan

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